Thank you k8gg. I can’t give VM on a synology NAS a try myself, because my NAS ist not a “+”, so not capable of running a vm.
Meanwhile I’m at the point that I wont go for a Synology to host my HA - sharing my thoughts:
As I want to change my HA-Hardware-setup away from my older Raspberry running from SD-Card, I thought it to be a nice and clean solution for runing my HA, because 1) it’s a quiet powerful hardware 2) running anyway and 3) with optimal reliability and backup features. I have to take into my consideration the money I want to spend, the performance and reliability I get for this and the time I need to spend for setup and maintainance. As I was investigating about the topic HA on Synology during the last days I got away from the idea of running my HA on a NAS and tend to a solution runnig it on its dedicated hardware because the time I need to spend seems to be way bigger, than I thougt. For exampe new problems ahead with the update to Synology DSM 7 (Anyone installed Hass.io on Synology DSM 7? - #6 by Volker_Steiger) as well as the issue with the high CPU-Loads.
If I go e.g. with a RPi 4 8GB + SDD I will have a good enogh performane for the next few years, a little less reliability but I can be sure that the software will stay supported very well and user-friendly for this platform, as it is the main used one.